Merge pull request #1780 from fatedier/dev

bump version

client/admin_api.go

@@ -88,6 +88,7 @@ type StatusResp struct {
 	Https []ProxyStatusResp `json:"https"`
 	Stcp  []ProxyStatusResp `json:"stcp"`
 	Xtcp  []ProxyStatusResp `json:"xtcp"`
+	Sudp  []ProxyStatusResp `json:"sudp"`
 }
 
 type ProxyStatusResp struct {
@@ -155,6 +156,11 @@ func NewProxyStatusResp(status *proxy.ProxyStatus, serverAddr string) ProxyStatu
 			psr.LocalAddr = fmt.Sprintf("%s:%d", cfg.LocalIp, cfg.LocalPort)
 		}
 		psr.Plugin = cfg.Plugin
+	case *config.SudpProxyConf:
+		if cfg.LocalPort != 0 {
+			psr.LocalAddr = fmt.Sprintf("%s:%d", cfg.LocalIp, cfg.LocalPort)
+		}
+		psr.Plugin = cfg.Plugin
 	}
 	return psr
 }
@@ -171,6 +177,7 @@ func (svr *Service) apiStatus(w http.ResponseWriter, r *http.Request) {
 	res.Https = make([]ProxyStatusResp, 0)
 	res.Stcp = make([]ProxyStatusResp, 0)
 	res.Xtcp = make([]ProxyStatusResp, 0)
+	res.Sudp = make([]ProxyStatusResp, 0)
 
 	log.Info("Http request [/api/status]")
 	defer func() {
@@ -194,6 +201,8 @@ func (svr *Service) apiStatus(w http.ResponseWriter, r *http.Request) {
 			res.Stcp = append(res.Stcp, NewProxyStatusResp(status, svr.cfg.ServerAddr))
 		case "xtcp":
 			res.Xtcp = append(res.Xtcp, NewProxyStatusResp(status, svr.cfg.ServerAddr))
+		case "sudp":
+			res.Sudp = append(res.Sudp, NewProxyStatusResp(status, svr.cfg.ServerAddr))
 		}
 	}
 	sort.Sort(ByProxyStatusResp(res.Tcp))
@@ -202,6 +211,7 @@ func (svr *Service) apiStatus(w http.ResponseWriter, r *http.Request) {
 	sort.Sort(ByProxyStatusResp(res.Https))
 	sort.Sort(ByProxyStatusResp(res.Stcp))
 	sort.Sort(ByProxyStatusResp(res.Xtcp))
+	sort.Sort(ByProxyStatusResp(res.Sudp))
 	return
 }
 

client/proxy/proxy.go

@@ -102,6 +102,12 @@ func NewProxy(ctx context.Context, pxyConf config.ProxyConf, clientCfg config.Cl
 			BaseProxy: &baseProxy,
 			cfg:       cfg,
 		}
+	case *config.SudpProxyConf:
+		pxy = &SudpProxy{
+			BaseProxy: &baseProxy,
+			cfg:       cfg,
+			closeCh:   make(chan struct{}),
+		}
 	}
 	return
 }
@@ -540,6 +546,151 @@ func (pxy *UdpProxy) InWorkConn(conn net.Conn, m *msg.StartWorkConn) {
 	udp.Forwarder(pxy.localAddr, pxy.readCh, pxy.sendCh)
 }
 
+type SudpProxy struct {
+	*BaseProxy
+
+	cfg *config.SudpProxyConf
+
+	localAddr *net.UDPAddr
+
+	closeCh chan struct{}
+}
+
+func (pxy *SudpProxy) Run() (err error) {
+	pxy.localAddr, err = net.ResolveUDPAddr("udp", fmt.Sprintf("%s:%d", pxy.cfg.LocalIp, pxy.cfg.LocalPort))
+	if err != nil {
+		return
+	}
+	return
+}
+
+func (pxy *SudpProxy) Close() {
+	pxy.mu.Lock()
+	defer pxy.mu.Unlock()
+	select {
+	case <-pxy.closeCh:
+		return
+	default:
+		close(pxy.closeCh)
+	}
+}
+
+func (pxy *SudpProxy) InWorkConn(conn net.Conn, m *msg.StartWorkConn) {
+	xl := pxy.xl
+	xl.Info("incoming a new work connection for sudp proxy, %s", conn.RemoteAddr().String())
+
+	if pxy.limiter != nil {
+		rwc := frpIo.WrapReadWriteCloser(limit.NewReader(conn, pxy.limiter), limit.NewWriter(conn, pxy.limiter), func() error {
+			return conn.Close()
+		})
+		conn = frpNet.WrapReadWriteCloserToConn(rwc, conn)
+	}
+
+	workConn := conn
+	readCh := make(chan *msg.UdpPacket, 1024)
+	sendCh := make(chan msg.Message, 1024)
+	isClose := false
+
+	mu := &sync.Mutex{}
+
+	closeFn := func() {
+		mu.Lock()
+		defer mu.Unlock()
+		if isClose {
+			return
+		}
+
+		isClose = true
+		if workConn != nil {
+			workConn.Close()
+		}
+		close(readCh)
+		close(sendCh)
+	}
+
+	// udp service <- frpc <- frps <- frpc visitor <- user
+	workConnReaderFn := func(conn net.Conn, readCh chan *msg.UdpPacket) {
+		defer closeFn()
+
+		for {
+			// first to check sudp proxy is closed or not
+			select {
+			case <-pxy.closeCh:
+				xl.Trace("frpc sudp proxy is closed")
+				return
+			default:
+			}
+
+			var udpMsg msg.UdpPacket
+			if errRet := msg.ReadMsgInto(conn, &udpMsg); errRet != nil {
+				xl.Warn("read from workConn for sudp error: %v", errRet)
+				return
+			}
+
+			if errRet := errors.PanicToError(func() {
+				readCh <- &udpMsg
+			}); errRet != nil {
+				xl.Warn("reader goroutine for sudp work connection closed: %v", errRet)
+				return
+			}
+		}
+	}
+
+	// udp service -> frpc -> frps -> frpc visitor -> user
+	workConnSenderFn := func(conn net.Conn, sendCh chan msg.Message) {
+		defer func() {
+			closeFn()
+			xl.Info("writer goroutine for sudp work connection closed")
+		}()
+
+		var errRet error
+		for rawMsg := range sendCh {
+			switch m := rawMsg.(type) {
+			case *msg.UdpPacket:
+				xl.Trace("frpc send udp package to frpc visitor, [udp local: %v, remote: %v], [tcp work conn local: %v, remote: %v]",
+					m.LocalAddr.String(), m.RemoteAddr.String(), conn.LocalAddr().String(), conn.RemoteAddr().String())
+			case *msg.Ping:
+				xl.Trace("frpc send ping message to frpc visitor")
+			}
+
+			if errRet = msg.WriteMsg(conn, rawMsg); errRet != nil {
+				xl.Error("sudp work write error: %v", errRet)
+				return
+			}
+		}
+	}
+
+	heartbeatFn := func(conn net.Conn, sendCh chan msg.Message) {
+		ticker := time.NewTicker(30 * time.Second)
+		defer func() {
+			ticker.Stop()
+			closeFn()
+		}()
+
+		var errRet error
+		for {
+			select {
+			case <-ticker.C:
+				if errRet = errors.PanicToError(func() {
+					sendCh <- &msg.Ping{}
+				}); errRet != nil {
+					xl.Warn("heartbeat goroutine for sudp work connection closed")
+					return
+				}
+			case <-pxy.closeCh:
+				xl.Trace("frpc sudp proxy is closed")
+				return
+			}
+		}
+	}
+
+	go workConnSenderFn(workConn, sendCh)
+	go workConnReaderFn(workConn, readCh)
+	go heartbeatFn(workConn, sendCh)
+
+	udp.Forwarder(pxy.localAddr, readCh, sendCh)
+}
+
 // Common handler for tcp work connections.
 func HandleTcpWorkConnection(ctx context.Context, localInfo *config.LocalSvrConf, proxyPlugin plugin.Plugin,
 	baseInfo *config.BaseProxyConf, limiter *rate.Limiter, workConn net.Conn, encKey []byte, m *msg.StartWorkConn) {

client/visitor.go

@@ -26,10 +26,12 @@ import (
 
 	"github.com/fatedier/frp/models/config"
 	"github.com/fatedier/frp/models/msg"
+	"github.com/fatedier/frp/models/proto/udp"
 	frpNet "github.com/fatedier/frp/utils/net"
 	"github.com/fatedier/frp/utils/util"
 	"github.com/fatedier/frp/utils/xlog"
 
+	"github.com/fatedier/golib/errors"
 	frpIo "github.com/fatedier/golib/io"
 	"github.com/fatedier/golib/pool"
 	fmux "github.com/hashicorp/yamux"
@@ -58,6 +60,12 @@ func NewVisitor(ctx context.Context, ctl *Control, cfg config.VisitorConf) (visi
 			BaseVisitor: &baseVisitor,
 			cfg:         cfg,
 		}
+	case *config.SudpVisitorConf:
+		visitor = &SudpVisitor{
+			BaseVisitor:  &baseVisitor,
+			cfg:          cfg,
+			checkCloseCh: make(chan struct{}),
+		}
 	}
 	return
 }
@@ -328,3 +336,204 @@ func (sv *XtcpVisitor) handleConn(userConn net.Conn) {
 	frpIo.Join(userConn, muxConnRWCloser)
 	xl.Debug("join connections closed")
 }
+
+type SudpVisitor struct {
+	*BaseVisitor
+
+	checkCloseCh chan struct{}
+	// udpConn is the listener of udp packet
+	udpConn *net.UDPConn
+	readCh  chan *msg.UdpPacket
+	sendCh  chan *msg.UdpPacket
+
+	cfg *config.SudpVisitorConf
+}
+
+// SUDP Run start listen a udp port
+func (sv *SudpVisitor) Run() (err error) {
+	xl := xlog.FromContextSafe(sv.ctx)
+
+	addr, err := net.ResolveUDPAddr("udp", fmt.Sprintf("%s:%d", sv.cfg.BindAddr, sv.cfg.BindPort))
+	if err != nil {
+		return fmt.Errorf("sudp ResolveUDPAddr error: %v", err)
+	}
+
+	sv.udpConn, err = net.ListenUDP("udp", addr)
+	if err != nil {
+		return fmt.Errorf("listen udp port %s error: %v", addr.String(), err)
+	}
+
+	sv.sendCh = make(chan *msg.UdpPacket, 1024)
+	sv.readCh = make(chan *msg.UdpPacket, 1024)
+
+	xl.Info("sudp start to work")
+
+	go sv.dispatcher()
+	go udp.ForwardUserConn(sv.udpConn, sv.readCh, sv.sendCh)
+
+	return
+}
+
+func (sv *SudpVisitor) dispatcher() {
+	xl := xlog.FromContextSafe(sv.ctx)
+
+	for {
+		// loop for get frpc to frps tcp conn
+		// setup worker
+		// wait worker to finished
+		// retry or exit
+		visitorConn, err := sv.getNewVisitorConn()
+		if err != nil {
+			// check if proxy is closed
+			// if checkCloseCh is close, we will return, other case we will continue to reconnect
+			select {
+			case <-sv.checkCloseCh:
+				xl.Info("frpc sudp visitor proxy is closed")
+				return
+			default:
+			}
+
+			time.Sleep(3 * time.Second)
+
+			xl.Warn("newVisitorConn to frps error: %v, try to reconnect", err)
+			continue
+		}
+
+		sv.worker(visitorConn)
+
+		select {
+		case <-sv.checkCloseCh:
+			return
+		default:
+		}
+	}
+}
+
+func (sv *SudpVisitor) worker(workConn net.Conn) {
+	xl := xlog.FromContextSafe(sv.ctx)
+	xl.Debug("starting sudp proxy worker")
+
+	wg := &sync.WaitGroup{}
+	wg.Add(2)
+	closeCh := make(chan struct{})
+
+	// udp service -> frpc -> frps -> frpc visitor -> user
+	workConnReaderFn := func(conn net.Conn) {
+		defer func() {
+			conn.Close()
+			close(closeCh)
+			wg.Done()
+		}()
+
+		for {
+			var (
+				rawMsg msg.Message
+				errRet error
+			)
+
+			// frpc will send heartbeat in workConn to frpc visitor for keeping alive
+			conn.SetReadDeadline(time.Now().Add(60 * time.Second))
+			if rawMsg, errRet = msg.ReadMsg(conn); errRet != nil {
+				xl.Warn("read from workconn for user udp conn error: %v", errRet)
+				return
+			}
+
+			conn.SetReadDeadline(time.Time{})
+			switch m := rawMsg.(type) {
+			case *msg.Ping:
+				xl.Debug("frpc visitor get ping message from frpc")
+				continue
+			case *msg.UdpPacket:
+				if errRet := errors.PanicToError(func() {
+					sv.readCh <- m
+					xl.Trace("frpc visitor get udp packet from frpc")
+				}); errRet != nil {
+					xl.Info("reader goroutine for udp work connection closed")
+					return
+				}
+			}
+		}
+	}
+
+	// udp service <- frpc <- frps <- frpc visitor <- user
+	workConnSenderFn := func(conn net.Conn) {
+		defer func() {
+			conn.Close()
+			wg.Done()
+		}()
+
+		var errRet error
+		for {
+			select {
+			case udpMsg, ok := <-sv.sendCh:
+				if !ok {
+					xl.Info("sender goroutine for udp work connection closed")
+					return
+				}
+
+				if errRet = msg.WriteMsg(conn, udpMsg); errRet != nil {
+					xl.Warn("sender goroutine for udp work connection closed: %v", errRet)
+					return
+				}
+			case <-closeCh:
+				return
+			}
+		}
+	}
+
+	go workConnReaderFn(workConn)
+	go workConnSenderFn(workConn)
+
+	wg.Wait()
+	xl.Info("sudp worker is closed")
+}
+
+func (sv *SudpVisitor) getNewVisitorConn() (visitorConn net.Conn, err error) {
+	visitorConn, err = sv.ctl.connectServer()
+	if err != nil {
+		return nil, fmt.Errorf("frpc connect frps error: %v", err)
+	}
+
+	now := time.Now().Unix()
+	newVisitorConnMsg := &msg.NewVisitorConn{
+		ProxyName:      sv.cfg.ServerName,
+		SignKey:        util.GetAuthKey(sv.cfg.Sk, now),
+		Timestamp:      now,
+		UseEncryption:  sv.cfg.UseEncryption,
+		UseCompression: sv.cfg.UseCompression,
+	}
+	err = msg.WriteMsg(visitorConn, newVisitorConnMsg)
+	if err != nil {
+		return nil, fmt.Errorf("frpc send newVisitorConnMsg to frps error: %v", err)
+	}
+
+	var newVisitorConnRespMsg msg.NewVisitorConnResp
+	visitorConn.SetReadDeadline(time.Now().Add(10 * time.Second))
+	err = msg.ReadMsgInto(visitorConn, &newVisitorConnRespMsg)
+	if err != nil {
+		return nil, fmt.Errorf("frpc read newVisitorConnRespMsg error: %v", err)
+	}
+	visitorConn.SetReadDeadline(time.Time{})
+
+	if newVisitorConnRespMsg.Error != "" {
+		return nil, fmt.Errorf("start new visitor connection error: %s", newVisitorConnRespMsg.Error)
+	}
+	return
+}
+
+func (sv *SudpVisitor) Close() {
+	sv.mu.Lock()
+	defer sv.mu.Unlock()
+
+	select {
+	case <-sv.checkCloseCh:
+		return
+	default:
+		close(sv.checkCloseCh)
+	}
+	if sv.udpConn != nil {
+		sv.udpConn.Close()
+	}
+	close(sv.readCh)
+	close(sv.sendCh)
+}

cmd/frpc/sub/sudp.go

+// Copyright 2018 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package sub
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/spf13/cobra"
+
+	"github.com/fatedier/frp/models/config"
+	"github.com/fatedier/frp/models/consts"
+)
+
+func init() {
+	sudpCmd.PersistentFlags().StringVarP(&serverAddr, "server_addr", "s", "127.0.0.1:7000", "frp server's address")
+	sudpCmd.PersistentFlags().StringVarP(&user, "user", "u", "", "user")
+	sudpCmd.PersistentFlags().StringVarP(&protocol, "protocol", "p", "tcp", "tcp or kcp or websocket")
+	sudpCmd.PersistentFlags().StringVarP(&token, "token", "t", "", "auth token")
+	sudpCmd.PersistentFlags().StringVarP(&logLevel, "log_level", "", "info", "log level")
+	sudpCmd.PersistentFlags().StringVarP(&logFile, "log_file", "", "console", "console or file path")
+	sudpCmd.PersistentFlags().IntVarP(&logMaxDays, "log_max_days", "", 3, "log file reversed days")
+	sudpCmd.PersistentFlags().BoolVarP(&disableLogColor, "disable_log_color", "", false, "disable log color in console")
+
+	sudpCmd.PersistentFlags().StringVarP(&proxyName, "proxy_name", "n", "", "proxy name")
+	sudpCmd.PersistentFlags().StringVarP(&role, "role", "", "server", "role")
+	sudpCmd.PersistentFlags().StringVarP(&sk, "sk", "", "", "secret key")
+	sudpCmd.PersistentFlags().StringVarP(&serverName, "server_name", "", "", "server name")
+	sudpCmd.PersistentFlags().StringVarP(&localIp, "local_ip", "i", "127.0.0.1", "local ip")
+	sudpCmd.PersistentFlags().IntVarP(&localPort, "local_port", "l", 0, "local port")
+	sudpCmd.PersistentFlags().StringVarP(&bindAddr, "bind_addr", "", "", "bind addr")
+	sudpCmd.PersistentFlags().IntVarP(&bindPort, "bind_port", "", 0, "bind port")
+	sudpCmd.PersistentFlags().BoolVarP(&useEncryption, "ue", "", false, "use encryption")
+	sudpCmd.PersistentFlags().BoolVarP(&useCompression, "uc", "", false, "use compression")
+
+	rootCmd.AddCommand(sudpCmd)
+}
+
+var sudpCmd = &cobra.Command{
+	Use:   "sudp",
+	Short: "Run frpc with a single sudp proxy",
+	RunE: func(cmd *cobra.Command, args []string) error {
+		clientCfg, err := parseClientCommonCfg(CfgFileTypeCmd, "")
+		if err != nil {
+			fmt.Println(err)
+			os.Exit(1)
+		}
+
+		proxyConfs := make(map[string]config.ProxyConf)
+		visitorConfs := make(map[string]config.VisitorConf)
+
+		var prefix string
+		if user != "" {
+			prefix = user + "."
+		}
+
+		if role == "server" {
+			cfg := &config.SudpProxyConf{}
+			cfg.ProxyName = prefix + proxyName
+			cfg.ProxyType = consts.SudpProxy
+			cfg.UseEncryption = useEncryption
+			cfg.UseCompression = useCompression
+			cfg.Role = role
+			cfg.Sk = sk
+			cfg.LocalIp = localIp
+			cfg.LocalPort = localPort
+			err = cfg.CheckForCli()
+			if err != nil {
+				fmt.Println(err)
+				os.Exit(1)
+			}
+			proxyConfs[cfg.ProxyName] = cfg
+		} else if role == "visitor" {
+			cfg := &config.SudpVisitorConf{}
+			cfg.ProxyName = prefix + proxyName
+			cfg.ProxyType = consts.SudpProxy
+			cfg.UseEncryption = useEncryption
+			cfg.UseCompression = useCompression
+			cfg.Role = role
+			cfg.Sk = sk
+			cfg.ServerName = serverName
+			cfg.BindAddr = bindAddr
+			cfg.BindPort = bindPort
+			err = cfg.Check()
+			if err != nil {
+				fmt.Println(err)
+				os.Exit(1)
+			}
+			visitorConfs[cfg.ProxyName] = cfg
+		} else {
+			fmt.Println("invalid role")
+			os.Exit(1)
+		}
+
+		err = startService(clientCfg, proxyConfs, visitorConfs, "")
+		if err != nil {
+			os.Exit(1)
+		}
+		return nil
+	},
+}

doc/server_plugin.md

@@ -70,7 +70,7 @@ The response can look like any of the following:
 
 ### Operation
 
-Currently `Login`, `NewProxy`, `Ping` and `NewWorkConn` operations are supported.
+Currently `Login`, `NewProxy`, `Ping`, `NewWorkConn` and `NewUserConn` operations are supported.
 
 #### Login
 
@@ -172,6 +172,25 @@ New work connection received from frpc (RPC sent after `run_id` is matched with
 }
 ```
 
+#### NewUserConn
+
+New user connection received from proxy (support `tcp`, `stcp`, `https` and `tcpmux`) .
+
+```
+{
+    "content": {
+        "user": {
+            "user": <string>,
+            "metas": map<string>string
+            "run_id": <string>
+        },
+        "proxy_name": <string>,
+        "proxy_type": <string>,
+        "remote_addr": <string>
+    }
+}
+```
+
 ### Server Plugin Configuration
 
 ```ini

doc/server_plugin_zh.md

@@ -69,7 +69,7 @@ Response
 
 ### 操作类型
 
-目前插件支持管理的操作类型有 `Login` 和 `NewProxy`。
+目前插件支持管理的操作类型有 `Login`、`NewProxy`、`Ping`、`NewWorkConn` 和 `NewUserConn`。
 
 #### Login
 
@@ -127,6 +127,63 @@ Response
 }
 ```
 
+#### Ping
+
+心跳相关信息
+
+```
+{
+    "content": {
+        "user": {
+            "user": <string>,
+            "metas": map<string>string
+            "run_id": <string>
+        },
+        "timestamp": <int64>,
+        "privilege_key": <string>
+    }
+}
+```
+
+#### NewWorkConn
+
+新增 `frpc` 连接相关信息
+
+```
+{
+    "content": {
+        "user": {
+            "user": <string>,
+            "metas": map<string>string
+            "run_id": <string>
+        },
+        "run_id": <string>
+        "timestamp": <int64>,
+        "privilege_key": <string>
+    }
+}
+```
+
+#### NewUserConn
+
+新增 `proxy` 连接相关信息 (支持 `tcp`、`stcp`、`https` 和 `tcpmux` 协议)。
+
+```
+{
+    "content": {
+        "user": {
+            "user": <string>,
+            "metas": map<string>string
+            "run_id": <string>
+        },
+        "proxy_name": <string>,
+        "proxy_type": <string>,
+        "remote_addr": <string>
+    }
+}
+```
+
+
 ### frps 中插件配置
 
 ```ini

models/auth/token.go

@@ -81,7 +81,7 @@ func (auth *TokenAuthSetterVerifier) SetPing(pingMsg *msg.Ping) error {
 }
 
 func (auth *TokenAuthSetterVerifier) SetNewWorkConn(newWorkConnMsg *msg.NewWorkConn) error {
-	if !auth.AuthenticateHeartBeats {
+	if !auth.AuthenticateNewWorkConns {
 		return nil
 	}
 

models/config/proxy.go

@@ -40,6 +40,7 @@ func init() {
 	proxyConfTypeMap[consts.HttpsProxy] = reflect.TypeOf(HttpsProxyConf{})
 	proxyConfTypeMap[consts.StcpProxy] = reflect.TypeOf(StcpProxyConf{})
 	proxyConfTypeMap[consts.XtcpProxy] = reflect.TypeOf(XtcpProxyConf{})
+	proxyConfTypeMap[consts.SudpProxy] = reflect.TypeOf(SudpProxyConf{})
 }
 
 // NewConfByType creates a empty ProxyConf object by proxyType.
@@ -875,6 +876,72 @@ func (cfg *HttpsProxyConf) CheckForSvr(serverCfg ServerCommonConf) (err error) {
 	return
 }
 
+// SUDP
+type SudpProxyConf struct {
+	BaseProxyConf
+
+	Role string `json:"role"`
+	Sk   string `json:"sk"`
+}
+
+func (cfg *SudpProxyConf) Compare(cmp ProxyConf) bool {
+	cmpConf, ok := cmp.(*SudpProxyConf)
+	if !ok {
+		return false
+	}
+
+	if !cfg.BaseProxyConf.compare(&cmpConf.BaseProxyConf) ||
+		cfg.Role != cmpConf.Role ||
+		cfg.Sk != cmpConf.Sk {
+		return false
+	}
+	return true
+}
+
+func (cfg *SudpProxyConf) UnmarshalFromIni(prefix string, name string, section ini.Section) (err error) {
+	if err = cfg.BaseProxyConf.UnmarshalFromIni(prefix, name, section); err != nil {
+		return
+	}
+
+	cfg.Role = section["role"]
+	if cfg.Role != "server" {
+		return fmt.Errorf("Parse conf error: proxy [%s] incorrect role [%s]", name, cfg.Role)
+	}
+
+	cfg.Sk = section["sk"]
+
+	if err = cfg.LocalSvrConf.UnmarshalFromIni(prefix, name, section); err != nil {
+		return
+	}
+	return
+}
+
+func (cfg *SudpProxyConf) MarshalToMsg(pMsg *msg.NewProxy) {
+	cfg.BaseProxyConf.MarshalToMsg(pMsg)
+	pMsg.Sk = cfg.Sk
+}
+
+func (cfg *SudpProxyConf) CheckForCli() (err error) {
+	if err = cfg.BaseProxyConf.checkForCli(); err != nil {
+		return
+	}
+	if cfg.Role != "server" {
+		err = fmt.Errorf("role should be 'server'")
+		return
+	}
+	return
+}
+
+func (cfg *SudpProxyConf) CheckForSvr(serverCfg ServerCommonConf) (err error) {
+	return
+}
+
+// Only for role server.
+func (cfg *SudpProxyConf) UnmarshalFromMsg(pMsg *msg.NewProxy) {
+	cfg.BaseProxyConf.UnmarshalFromMsg(pMsg)
+	cfg.Sk = pMsg.Sk
+}
+
 // STCP
 type StcpProxyConf struct {
 	BaseProxyConf

models/config/visitor.go

@@ -32,6 +32,7 @@ func init() {
 	visitorConfTypeMap = make(map[string]reflect.Type)
 	visitorConfTypeMap[consts.StcpProxy] = reflect.TypeOf(StcpVisitorConf{})
 	visitorConfTypeMap[consts.XtcpProxy] = reflect.TypeOf(XtcpVisitorConf{})
+	visitorConfTypeMap[consts.SudpProxy] = reflect.TypeOf(SudpVisitorConf{})
 }
 
 type VisitorConf interface {
@@ -152,6 +153,36 @@ func (cfg *BaseVisitorConf) UnmarshalFromIni(prefix string, name string, section
 	return nil
 }
 
+type SudpVisitorConf struct {
+	BaseVisitorConf
+}
+
+func (cfg *SudpVisitorConf) Compare(cmp VisitorConf) bool {
+	cmpConf, ok := cmp.(*SudpVisitorConf)
+	if !ok {
+		return false
+	}
+
+	if !cfg.BaseVisitorConf.compare(&cmpConf.BaseVisitorConf) {
+		return false
+	}
+	return true
+}
+
+func (cfg *SudpVisitorConf) UnmarshalFromIni(prefix string, name string, section ini.Section) (err error) {
+	if err = cfg.BaseVisitorConf.UnmarshalFromIni(prefix, name, section); err != nil {
+		return
+	}
+	return
+}
+
+func (cfg *SudpVisitorConf) Check() (err error) {
+	if err = cfg.BaseVisitorConf.check(); err != nil {
+		return
+	}
+	return
+}
+
 type StcpVisitorConf struct {
 	BaseVisitorConf
 }

models/consts/consts.go

@@ -30,6 +30,7 @@ var (
 	HttpsProxy  string = "https"
 	StcpProxy   string = "stcp"
 	XtcpProxy   string = "xtcp"
+	SudpProxy   string = "sudp"
 
 	// authentication method
 	TokenAuthMethod string = "token"

models/plugin/server/manager.go

@@ -28,6 +28,7 @@ type Manager struct {
 	newProxyPlugins    []Plugin
 	pingPlugins        []Plugin
 	newWorkConnPlugins []Plugin
+	newUserConnPlugins []Plugin
 }
 
 func NewManager() *Manager {
@@ -36,6 +37,7 @@ func NewManager() *Manager {
 		newProxyPlugins:    make([]Plugin, 0),
 		pingPlugins:        make([]Plugin, 0),
 		newWorkConnPlugins: make([]Plugin, 0),
+		newUserConnPlugins: make([]Plugin, 0),
 	}
 }
 
@@ -52,6 +54,9 @@ func (m *Manager) Register(p Plugin) {
 	if p.IsSupport(OpNewWorkConn) {
 		m.pingPlugins = append(m.pingPlugins, p)
 	}
+	if p.IsSupport(OpNewUserConn) {
+		m.newUserConnPlugins = append(m.newUserConnPlugins, p)
+	}
 }
 
 func (m *Manager) Login(content *LoginContent) (*LoginContent, error) {
@@ -189,3 +194,37 @@ func (m *Manager) NewWorkConn(content *NewWorkConnContent) (*NewWorkConnContent,
 	}
 	return content, nil
 }
+
+func (m *Manager) NewUserConn(content *NewUserConnContent) (*NewUserConnContent, error) {
+	if len(m.newUserConnPlugins) == 0 {
+		return content, nil
+	}
+
+	var (
+		res = &Response{
+			Reject:   false,
+			Unchange: true,
+		}
+		retContent interface{}
+		err        error
+	)
+	reqid, _ := util.RandId()
+	xl := xlog.New().AppendPrefix("reqid: " + reqid)
+	ctx := xlog.NewContext(context.Background(), xl)
+	ctx = NewReqidContext(ctx, reqid)
+
+	for _, p := range m.newUserConnPlugins {
+		res, retContent, err = p.Handle(ctx, OpNewUserConn, *content)
+		if err != nil {
+			xl.Info("send NewUserConn request to plugin [%s] error: %v", p.Name(), err)
+			return nil, errors.New("send NewUserConn request to plugin error")
+		}
+		if res.Reject {
+			return nil, fmt.Errorf("%s", res.RejectReason)
+		}
+		if !res.Unchange {
+			content = retContent.(*NewUserConnContent)
+		}
+	}
+	return content, nil
+}

models/plugin/server/plugin.go

@@ -25,6 +25,7 @@ const (
 	OpNewProxy    = "NewProxy"
 	OpPing        = "Ping"
 	OpNewWorkConn = "NewWorkConn"
+	OpNewUserConn = "NewUserConn"
 )
 
 type Plugin interface {

models/plugin/server/types.go

@@ -55,3 +55,10 @@ type NewWorkConnContent struct {
 	User UserInfo `json:"user"`
 	msg.NewWorkConn
 }
+
+type NewUserConnContent struct {
+	User       UserInfo `json:"user"`
+	ProxyName  string   `json:"proxy_name"`
+	ProxyType  string   `json:"proxy_type"`
+	RemoteAddr string   `json:"remote_addr"`
+}

models/proto/udp/udp.go

@@ -57,11 +57,11 @@ func ForwardUserConn(udpConn *net.UDPConn, readCh <-chan *msg.UdpPacket, sendCh
 	for {
 		n, remoteAddr, err := udpConn.ReadFromUDP(buf)
 		if err != nil {
-			udpConn.Close()
 			return
 		}
 		// buf[:n] will be encoded to string, so the bytes can be reused
 		udpMsg := NewUdpPacket(buf[:n], nil, remoteAddr)
+
 		select {
 		case sendCh <- udpMsg:
 		default:

package.sh

 # compile for version
-#make
+make
 if [ $? -ne 0 ]; then
     echo "make error"
     exit 1
@@ -9,7 +9,7 @@ frp_version=`./bin/frps --version`
 echo "build version: $frp_version"
 
 # cross_compiles
-#make -f ./Makefile.cross-compiles
+make -f ./Makefile.cross-compiles
 
 rm -rf ./release/packages
 mkdir -p ./release/packages

server/control.go

@@ -486,9 +486,16 @@ func (ctl *Control) RegisterProxy(pxyMsg *msg.NewProxy) (remoteAddr string, err
 		return
 	}
 
+	// User info
+	userInfo := plugin.UserInfo{
+		User:  ctl.loginMsg.User,
+		Metas: ctl.loginMsg.Metas,
+		RunId: ctl.runId,
+	}
+
 	// NewProxy will return a interface Proxy.
 	// In fact it create different proxies by different proxy type, we just call run() here.
-	pxy, err := proxy.NewProxy(ctl.ctx, ctl.runId, ctl.rc, ctl.poolCount, ctl.GetWorkConn, pxyConf, ctl.serverCfg)
+	pxy, err := proxy.NewProxy(ctl.ctx, userInfo, ctl.rc, ctl.poolCount, ctl.GetWorkConn, pxyConf, ctl.serverCfg)
 	if err != nil {
 		return remoteAddr, err
 	}

server/controller/resource.go

@@ -16,6 +16,7 @@ package controller
 
 import (
 	"github.com/fatedier/frp/models/nathole"
+	plugin "github.com/fatedier/frp/models/plugin/server"
 	"github.com/fatedier/frp/server/group"
 	"github.com/fatedier/frp/server/ports"
 	"github.com/fatedier/frp/utils/tcpmux"
@@ -33,6 +34,9 @@ type ResourceController struct {
 	// HTTP Group Controller
 	HTTPGroupCtl *group.HTTPGroupController
 
+	// TCP Mux Group Controller
+	TcpMuxGroupCtl *group.TcpMuxGroupCtl
+
 	// Manage all tcp ports
 	TcpPortManager *ports.PortManager
 
@@ -50,4 +54,7 @@ type ResourceController struct {
 
 	// TcpMux HTTP CONNECT multiplexer
 	TcpMuxHttpConnectMuxer *tcpmux.HttpConnectTcpMuxer
+
+	// All server manager plugin
+	PluginManager *plugin.Manager
 }

server/group/tcpmux.go

+// Copyright 2020 guylewin, guy@lewin.co.il
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package group
+
+import (
+	"context"
+	"fmt"
+	"net"
+	"sync"
+
+	"github.com/fatedier/frp/models/consts"
+	"github.com/fatedier/frp/utils/tcpmux"
+	"github.com/fatedier/frp/utils/vhost"
+
+	gerr "github.com/fatedier/golib/errors"
+)
+
+// TcpMuxGroupCtl manage all TcpMuxGroups
+type TcpMuxGroupCtl struct {
+	groups map[string]*TcpMuxGroup
+
+	// portManager is used to manage port
+	tcpMuxHttpConnectMuxer *tcpmux.HttpConnectTcpMuxer
+	mu                     sync.Mutex
+}
+
+// NewTcpMuxGroupCtl return a new TcpMuxGroupCtl
+func NewTcpMuxGroupCtl(tcpMuxHttpConnectMuxer *tcpmux.HttpConnectTcpMuxer) *TcpMuxGroupCtl {
+	return &TcpMuxGroupCtl{
+		groups:                 make(map[string]*TcpMuxGroup),
+		tcpMuxHttpConnectMuxer: tcpMuxHttpConnectMuxer,
+	}
+}
+
+// Listen is the wrapper for TcpMuxGroup's Listen
+// If there are no group, we will create one here
+func (tmgc *TcpMuxGroupCtl) Listen(multiplexer string, group string, groupKey string,
+	domain string, ctx context.Context) (l net.Listener, err error) {
+	tmgc.mu.Lock()
+	tcpMuxGroup, ok := tmgc.groups[group]
+	if !ok {
+		tcpMuxGroup = NewTcpMuxGroup(tmgc)
+		tmgc.groups[group] = tcpMuxGroup
+	}
+	tmgc.mu.Unlock()
+
+	switch multiplexer {
+	case consts.HttpConnectTcpMultiplexer:
+		return tcpMuxGroup.HttpConnectListen(group, groupKey, domain, ctx)
+	default:
+		err = fmt.Errorf("unknown multiplexer [%s]", multiplexer)
+		return
+	}
+}
+
+// RemoveGroup remove TcpMuxGroup from controller
+func (tmgc *TcpMuxGroupCtl) RemoveGroup(group string) {
+	tmgc.mu.Lock()
+	defer tmgc.mu.Unlock()
+	delete(tmgc.groups, group)
+}
+
+// TcpMuxGroup route connections to different proxies
+type TcpMuxGroup struct {
+	group    string
+	groupKey string
+	domain   string
+
+	acceptCh chan net.Conn
+	index    uint64
+	tcpMuxLn net.Listener
+	lns      []*TcpMuxGroupListener
+	ctl      *TcpMuxGroupCtl
+	mu       sync.Mutex
+}
+
+// NewTcpMuxGroup return a new TcpMuxGroup
+func NewTcpMuxGroup(ctl *TcpMuxGroupCtl) *TcpMuxGroup {
+	return &TcpMuxGroup{
+		lns:      make([]*TcpMuxGroupListener, 0),
+		ctl:      ctl,
+		acceptCh: make(chan net.Conn),
+	}
+}
+
+// Listen will return a new TcpMuxGroupListener
+// if TcpMuxGroup already has a listener, just add a new TcpMuxGroupListener to the queues
+// otherwise, listen on the real address
+func (tmg *TcpMuxGroup) HttpConnectListen(group string, groupKey string, domain string, context context.Context) (ln *TcpMuxGroupListener, err error) {
+	tmg.mu.Lock()
+	defer tmg.mu.Unlock()
+	if len(tmg.lns) == 0 {
+		// the first listener, listen on the real address
+		routeConfig := &vhost.VhostRouteConfig{
+			Domain: domain,
+		}
+		tcpMuxLn, errRet := tmg.ctl.tcpMuxHttpConnectMuxer.Listen(context, routeConfig)
+		if errRet != nil {
+			return nil, errRet
+		}
+		ln = newTcpMuxGroupListener(group, tmg, tcpMuxLn.Addr())
+
+		tmg.group = group
+		tmg.groupKey = groupKey
+		tmg.domain = domain
+		tmg.tcpMuxLn = tcpMuxLn
+		tmg.lns = append(tmg.lns, ln)
+		if tmg.acceptCh == nil {
+			tmg.acceptCh = make(chan net.Conn)
+		}
+		go tmg.worker()
+	} else {
+		// domain in the same group must be equal
+		if tmg.group != group || tmg.domain != domain {
+			return nil, ErrGroupParamsInvalid
+		}
+		if tmg.groupKey != groupKey {
+			return nil, ErrGroupAuthFailed
+		}
+		ln = newTcpMuxGroupListener(group, tmg, tmg.lns[0].Addr())
+		tmg.lns = append(tmg.lns, ln)
+	}
+	return
+}
+
+// worker is called when the real tcp listener has been created
+func (tmg *TcpMuxGroup) worker() {
+	for {
+		c, err := tmg.tcpMuxLn.Accept()
+		if err != nil {
+			return
+		}
+		err = gerr.PanicToError(func() {
+			tmg.acceptCh <- c
+		})
+		if err != nil {
+			return
+		}
+	}
+}
+
+func (tmg *TcpMuxGroup) Accept() <-chan net.Conn {
+	return tmg.acceptCh
+}
+
+// CloseListener remove the TcpMuxGroupListener from the TcpMuxGroup
+func (tmg *TcpMuxGroup) CloseListener(ln *TcpMuxGroupListener) {
+	tmg.mu.Lock()
+	defer tmg.mu.Unlock()
+	for i, tmpLn := range tmg.lns {
+		if tmpLn == ln {
+			tmg.lns = append(tmg.lns[:i], tmg.lns[i+1:]...)
+			break
+		}
+	}
+	if len(tmg.lns) == 0 {
+		close(tmg.acceptCh)
+		tmg.tcpMuxLn.Close()
+		tmg.ctl.RemoveGroup(tmg.group)
+	}
+}
+
+// TcpMuxGroupListener
+type TcpMuxGroupListener struct {
+	groupName string
+	group     *TcpMuxGroup
+
+	addr    net.Addr
+	closeCh chan struct{}
+}
+
+func newTcpMuxGroupListener(name string, group *TcpMuxGroup, addr net.Addr) *TcpMuxGroupListener {
+	return &TcpMuxGroupListener{
+		groupName: name,
+		group:     group,
+		addr:      addr,
+		closeCh:   make(chan struct{}),
+	}
+}
+
+// Accept will accept connections from TcpMuxGroup
+func (ln *TcpMuxGroupListener) Accept() (c net.Conn, err error) {
+	var ok bool
+	select {
+	case <-ln.closeCh:
+		return nil, ErrListenerClosed
+	case c, ok = <-ln.group.Accept():
+		if !ok {
+			return nil, ErrListenerClosed
+		}
+		return c, nil
+	}
+}
+
+func (ln *TcpMuxGroupListener) Addr() net.Addr {
+	return ln.addr
+}
+
+// Close close the listener
+func (ln *TcpMuxGroupListener) Close() (err error) {
+	close(ln.closeCh)
+
+	// remove self from TcpMuxGroup
+	ln.group.CloseListener(ln)
+	return
+}

server/proxy/proxy.go

@@ -24,6 +24,7 @@ import (
 
 	"github.com/fatedier/frp/models/config"
 	"github.com/fatedier/frp/models/msg"
+	plugin "github.com/fatedier/frp/models/plugin/server"
 	"github.com/fatedier/frp/server/controller"
 	"github.com/fatedier/frp/server/metrics"
 	frpNet "github.com/fatedier/frp/utils/net"
@@ -41,6 +42,8 @@ type Proxy interface {
 	GetConf() config.ProxyConf
 	GetWorkConnFromPool(src, dst net.Addr) (workConn net.Conn, err error)
 	GetUsedPortsNum() int
+	GetResourceController() *controller.ResourceController
+	GetUserInfo() plugin.UserInfo
 	Close()
 }
 
@@ -52,6 +55,7 @@ type BaseProxy struct {
 	poolCount     int
 	getWorkConnFn GetWorkConnFn
 	serverCfg     config.ServerCommonConf
+	userInfo      plugin.UserInfo
 
 	mu  sync.RWMutex
 	xl  *xlog.Logger
@@ -70,6 +74,14 @@ func (pxy *BaseProxy) GetUsedPortsNum() int {
 	return pxy.usedPortsNum
 }
 
+func (pxy *BaseProxy) GetResourceController() *controller.ResourceController {
+	return pxy.rc
+}
+
+func (pxy *BaseProxy) GetUserInfo() plugin.UserInfo {
+	return pxy.userInfo
+}
+
 func (pxy *BaseProxy) Close() {
 	xl := xlog.FromContextSafe(pxy.ctx)
 	xl.Info("proxy closing")
@@ -154,7 +166,7 @@ func (pxy *BaseProxy) startListenHandler(p Proxy, handler func(Proxy, net.Conn,
 	}
 }
 
-func NewProxy(ctx context.Context, runId string, rc *controller.ResourceController, poolCount int,
+func NewProxy(ctx context.Context, userInfo plugin.UserInfo, rc *controller.ResourceController, poolCount int,
 	getWorkConnFn GetWorkConnFn, pxyConf config.ProxyConf, serverCfg config.ServerCommonConf) (pxy Proxy, err error) {
 
 	xl := xlog.FromContextSafe(ctx).Spawn().AppendPrefix(pxyConf.GetBaseInfo().ProxyName)
@@ -167,6 +179,7 @@ func NewProxy(ctx context.Context, runId string, rc *controller.ResourceControll
 		serverCfg:     serverCfg,
 		xl:            xl,
 		ctx:           xlog.NewContext(ctx, xl),
+		userInfo:      userInfo,
 	}
 	switch cfg := pxyConf.(type) {
 	case *config.TcpProxyConf:
@@ -206,6 +219,11 @@ func NewProxy(ctx context.Context, runId string, rc *controller.ResourceControll
 			BaseProxy: &basePxy,
 			cfg:       cfg,
 		}
+	case *config.SudpProxyConf:
+		pxy = &SudpProxy{
+			BaseProxy: &basePxy,
+			cfg:       cfg,
+		}
 	default:
 		return pxy, fmt.Errorf("proxy type not support")
 	}
@@ -218,6 +236,20 @@ func HandleUserTcpConnection(pxy Proxy, userConn net.Conn, serverCfg config.Serv
 	xl := xlog.FromContextSafe(pxy.Context())
 	defer userConn.Close()
 
+	// server plugin hook
+	rc := pxy.GetResourceController()
+	content := &plugin.NewUserConnContent{
+		User:       pxy.GetUserInfo(),
+		ProxyName:  pxy.GetName(),
+		ProxyType:  pxy.GetConf().GetBaseInfo().ProxyType,
+		RemoteAddr: userConn.RemoteAddr().String(),
+	}
+	_, err := rc.PluginManager.NewUserConn(content)
+	if err != nil {
+		xl.Warn("the user conn [%s] was rejected, err:%v", content.RemoteAddr, err)
+		return
+	}
+
 	// try all connections from the pool
 	workConn, err := pxy.GetWorkConnFromPool(userConn.RemoteAddr(), userConn.LocalAddr())
 	if err != nil {

server/proxy/sudp.go

+// Copyright 2019 fatedier, fatedier@gmail.com
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package proxy
+
+import (
+	"github.com/fatedier/frp/models/config"
+)
+
+type SudpProxy struct {
+	*BaseProxy
+	cfg *config.SudpProxyConf
+}
+
+func (pxy *SudpProxy) Run() (remoteAddr string, err error) {
+	xl := pxy.xl
+
+	listener, errRet := pxy.rc.VisitorManager.Listen(pxy.GetName(), pxy.cfg.Sk)
+	if errRet != nil {
+		err = errRet
+		return
+	}
+	pxy.listeners = append(pxy.listeners, listener)
+	xl.Info("sudp proxy custom listen success")
+
+	pxy.startListenHandler(pxy, HandleUserTcpConnection)
+	return
+}
+
+func (pxy *SudpProxy) GetConf() config.ProxyConf {
+	return pxy.cfg
+}
+
+func (pxy *SudpProxy) Close() {
+	pxy.BaseProxy.Close()
+	pxy.rc.VisitorManager.CloseListener(pxy.GetName())
+}

server/proxy/tcpmux.go

@@ -16,6 +16,7 @@ package proxy
 
 import (
 	"fmt"
+	"net"
 	"strings"
 
 	"github.com/fatedier/frp/models/config"
@@ -27,21 +28,24 @@ import (
 type TcpMuxProxy struct {
 	*BaseProxy
 	cfg *config.TcpMuxProxyConf
-
-	realPort int
 }
 
-func (pxy *TcpMuxProxy) httpConnectListen(domain string, addrs []string) ([]string, error) {
-	routeConfig := &vhost.VhostRouteConfig{
-		Domain: domain,
+func (pxy *TcpMuxProxy) httpConnectListen(domain string, addrs []string) (_ []string, err error) {
+	var l net.Listener
+	if pxy.cfg.Group != "" {
+		l, err = pxy.rc.TcpMuxGroupCtl.Listen(pxy.cfg.Multiplexer, pxy.cfg.Group, pxy.cfg.GroupKey, domain, pxy.ctx)
+	} else {
+		routeConfig := &vhost.VhostRouteConfig{
+			Domain: domain,
+		}
+		l, err = pxy.rc.TcpMuxHttpConnectMuxer.Listen(pxy.ctx, routeConfig)
 	}
-	l, err := pxy.rc.TcpMuxHttpConnectMuxer.Listen(pxy.ctx, routeConfig)
 	if err != nil {
 		return nil, err
 	}
-	pxy.xl.Info("tcpmux httpconnect multiplexer listens for host [%s]", routeConfig.Domain)
+	pxy.xl.Info("tcpmux httpconnect multiplexer listens for host [%s]", domain)
 	pxy.listeners = append(pxy.listeners, l)
-	return append(addrs, util.CanonicalAddr(routeConfig.Domain, pxy.serverCfg.TcpMuxHttpConnectPort)), nil
+	return append(addrs, util.CanonicalAddr(domain, pxy.serverCfg.TcpMuxHttpConnectPort)), nil
 }
 
 func (pxy *TcpMuxProxy) httpConnectRun() (remoteAddr string, err error) {
@@ -89,7 +93,4 @@ func (pxy *TcpMuxProxy) GetConf() config.ProxyConf {
 
 func (pxy *TcpMuxProxy) Close() {
 	pxy.BaseProxy.Close()
-	if pxy.cfg.Group == "" {
-		pxy.rc.TcpPortManager.Release(pxy.realPort)
-	}
 }

server/service.go

@@ -114,11 +114,29 @@ func NewService(cfg config.ServerCommonConf) (svr *Service, err error) {
 		cfg:             cfg,
 	}
 
+	// Create tcpmux httpconnect multiplexer.
+	if cfg.TcpMuxHttpConnectPort > 0 {
+		var l net.Listener
+		l, err = net.Listen("tcp", fmt.Sprintf("%s:%d", cfg.ProxyBindAddr, cfg.TcpMuxHttpConnectPort))
+		if err != nil {
+			err = fmt.Errorf("Create server listener error, %v", err)
+			return
+		}
+
+		svr.rc.TcpMuxHttpConnectMuxer, err = tcpmux.NewHttpConnectTcpMuxer(l, vhostReadWriteTimeout)
+		if err != nil {
+			err = fmt.Errorf("Create vhost tcpMuxer error, %v", err)
+			return
+		}
+		log.Info("tcpmux httpconnect multiplexer listen on %s:%d", cfg.ProxyBindAddr, cfg.TcpMuxHttpConnectPort)
+	}
+
 	// Init all plugins
 	for name, options := range cfg.HTTPPlugins {
 		svr.pluginManager.Register(plugin.NewHTTPPluginOptions(options))
 		log.Info("plugin [%s] has been registered", name)
 	}
+	svr.rc.PluginManager = svr.pluginManager
 
 	// Init group controller
 	svr.rc.TcpGroupCtl = group.NewTcpGroupCtl(svr.rc.TcpPortManager)
@@ -126,6 +144,9 @@ func NewService(cfg config.ServerCommonConf) (svr *Service, err error) {
 	// Init HTTP group controller
 	svr.rc.HTTPGroupCtl = group.NewHTTPGroupController(svr.httpVhostRouter)
 
+	// Init TCP mux group controller
+	svr.rc.TcpMuxGroupCtl = group.NewTcpMuxGroupCtl(svr.rc.TcpMuxHttpConnectMuxer)
+
 	// Init 404 not found page
 	vhost.NotFoundPagePath = cfg.Custom404Page
 
@@ -220,23 +241,6 @@ func NewService(cfg config.ServerCommonConf) (svr *Service, err error) {
 		log.Info("https service listen on %s:%d", cfg.ProxyBindAddr, cfg.VhostHttpsPort)
 	}
 
-	// Create tcpmux httpconnect multiplexer.
-	if cfg.TcpMuxHttpConnectPort > 0 {
-		var l net.Listener
-		l, err = net.Listen("tcp", fmt.Sprintf("%s:%d", cfg.ProxyBindAddr, cfg.TcpMuxHttpConnectPort))
-		if err != nil {
-			err = fmt.Errorf("Create server listener error, %v", err)
-			return
-		}
-
-		svr.rc.TcpMuxHttpConnectMuxer, err = tcpmux.NewHttpConnectTcpMuxer(l, vhostReadWriteTimeout)
-		if err != nil {
-			err = fmt.Errorf("Create vhost tcpMuxer error, %v", err)
-			return
-		}
-		log.Info("tcpmux httpconnect multiplexer listen on %s:%d", cfg.ProxyBindAddr, cfg.TcpMuxHttpConnectPort)
-	}
-
 	// frp tls listener
 	svr.tlsListener = svr.muxer.Listen(1, 1, func(data []byte) bool {
 		return int(data[0]) == frpNet.FRP_TLS_HEAD_BYTE
@@ -296,6 +300,68 @@ func (svr *Service) Run() {
 	svr.HandleListener(svr.listener)
 }
 
+func (svr *Service) handleConnection(ctx context.Context, conn net.Conn) {
+	xl := xlog.FromContextSafe(ctx)
+
+	var (
+		rawMsg msg.Message
+		err    error
+	)
+
+	conn.SetReadDeadline(time.Now().Add(connReadTimeout))
+	if rawMsg, err = msg.ReadMsg(conn); err != nil {
+		log.Trace("Failed to read message: %v", err)
+		conn.Close()
+		return
+	}
+	conn.SetReadDeadline(time.Time{})
+
+	switch m := rawMsg.(type) {
+	case *msg.Login:
+		// server plugin hook
+		content := &plugin.LoginContent{
+			Login: *m,
+		}
+		retContent, err := svr.pluginManager.Login(content)
+		if err == nil {
+			m = &retContent.Login
+			err = svr.RegisterControl(conn, m)
+		}
+
+		// If login failed, send error message there.
+		// Otherwise send success message in control's work goroutine.
+		if err != nil {
+			xl.Warn("register control error: %v", err)
+			msg.WriteMsg(conn, &msg.LoginResp{
+				Version: version.Full(),
+				Error:   util.GenerateResponseErrorString("register control error", err, svr.cfg.DetailedErrorsToClient),
+			})
+			conn.Close()
+		}
+	case *msg.NewWorkConn:
+		if err := svr.RegisterWorkConn(conn, m); err != nil {
+			conn.Close()
+		}
+	case *msg.NewVisitorConn:
+		if err = svr.RegisterVisitorConn(conn, m); err != nil {
+			xl.Warn("register visitor conn error: %v", err)
+			msg.WriteMsg(conn, &msg.NewVisitorConnResp{
+				ProxyName: m.ProxyName,
+				Error:     util.GenerateResponseErrorString("register visitor conn error", err, svr.cfg.DetailedErrorsToClient),
+			})
+			conn.Close()
+		} else {
+			msg.WriteMsg(conn, &msg.NewVisitorConnResp{
+				ProxyName: m.ProxyName,
+				Error:     "",
+			})
+		}
+	default:
+		log.Warn("Error message type for the new connection [%s]", conn.RemoteAddr().String())
+		conn.Close()
+	}
+}
+
 func (svr *Service) HandleListener(l net.Listener) {
 	// Listen for incoming connections from client.
 	for {
@@ -306,7 +372,9 @@ func (svr *Service) HandleListener(l net.Listener) {
 		}
 		// inject xlog object into net.Conn context
 		xl := xlog.New()
-		c = frpNet.NewContextConn(c, xlog.NewContext(context.Background(), xl))
+		ctx := context.Background()
+
+		c = frpNet.NewContextConn(c, xlog.NewContext(ctx, xl))
 
 		log.Trace("start check TLS connection...")
 		originConn := c
@@ -319,63 +387,7 @@ func (svr *Service) HandleListener(l net.Listener) {
 		log.Trace("success check TLS connection")
 
 		// Start a new goroutine for dealing connections.
-		go func(frpConn net.Conn) {
-			dealFn := func(conn net.Conn) {
-				var rawMsg msg.Message
-				conn.SetReadDeadline(time.Now().Add(connReadTimeout))
-				if rawMsg, err = msg.ReadMsg(conn); err != nil {
-					log.Trace("Failed to read message: %v", err)
-					conn.Close()
-					return
-				}
-				conn.SetReadDeadline(time.Time{})
-
-				switch m := rawMsg.(type) {
-				case *msg.Login:
-					// server plugin hook
-					content := &plugin.LoginContent{
-						Login: *m,
-					}
-					retContent, err := svr.pluginManager.Login(content)
-					if err == nil {
-						m = &retContent.Login
-						err = svr.RegisterControl(conn, m)
-					}
-
-					// If login failed, send error message there.
-					// Otherwise send success message in control's work goroutine.
-					if err != nil {
-						xl.Warn("register control error: %v", err)
-						msg.WriteMsg(conn, &msg.LoginResp{
-							Version: version.Full(),
-							Error:   util.GenerateResponseErrorString("register control error", err, svr.cfg.DetailedErrorsToClient),
-						})
-						conn.Close()
-					}
-				case *msg.NewWorkConn:
-					if err := svr.RegisterWorkConn(conn, m); err != nil {
-						conn.Close()
-					}
-				case *msg.NewVisitorConn:
-					if err = svr.RegisterVisitorConn(conn, m); err != nil {
-						xl.Warn("register visitor conn error: %v", err)
-						msg.WriteMsg(conn, &msg.NewVisitorConnResp{
-							ProxyName: m.ProxyName,
-							Error:     util.GenerateResponseErrorString("register visitor conn error", err, svr.cfg.DetailedErrorsToClient),
-						})
-						conn.Close()
-					} else {
-						msg.WriteMsg(conn, &msg.NewVisitorConnResp{
-							ProxyName: m.ProxyName,
-							Error:     "",
-						})
-					}
-				default:
-					log.Warn("Error message type for the new connection [%s]", conn.RemoteAddr().String())
-					conn.Close()
-				}
-			}
-
+		go func(ctx context.Context, frpConn net.Conn) {
 			if svr.cfg.TcpMux {
 				fmuxCfg := fmux.DefaultConfig()
 				fmuxCfg.KeepAliveInterval = 20 * time.Second
@@ -394,12 +406,12 @@ func (svr *Service) HandleListener(l net.Listener) {
 						session.Close()
 						return
 					}
-					go dealFn(stream)
+					go svr.handleConnection(ctx, stream)
 				}
 			} else {
-				dealFn(frpConn)
+				svr.handleConnection(ctx, frpConn)
 			}
-		}(c)
+		}(ctx, c)
 	}
 }
 

tests/ci/auto_test_frpc.ini

@@ -72,6 +72,12 @@ local_port = 10701
 use_encryption = true
 use_compression = true
 
+[sudp]
+type = sudp
+sk = abcdefg
+local_ip = 127.0.0.1
+local_port = 10702
+
 [web01]
 type = http
 local_ip = 127.0.0.1

tests/ci/auto_test_frpc_visitor.ini

@@ -23,3 +23,12 @@ bind_addr = 127.0.0.1
 bind_port = 10905
 use_encryption = true
 use_compression = true
+
+
+[sudp_visitor]
+type = sudp
+role = visitor
+server_name = sudp
+sk = abcdefg
+bind_addr = 127.0.0.1
+bind_port = 10816

tests/ci/normal_test.go

@@ -118,6 +118,16 @@ func TestStcp(t *testing.T) {
 	}
 }
 
+func TestSudp(t *testing.T) {
+	assert := assert.New(t)
+	// Normal
+	addr := fmt.Sprintf("127.0.0.1:%d", consts.TEST_SUDP_FRP_PORT)
+	res, err := util.SendUdpMsg(addr, consts.TEST_SUDP_ECHO_STR)
+
+	assert.NoError(err)
+	assert.Equal(consts.TEST_SUDP_ECHO_STR, res)
+}
+
 func TestHttp(t *testing.T) {
 	assert := assert.New(t)
 	// web01

tests/consts/consts.go

@@ -46,6 +46,9 @@ var (
 	TEST_STCP_EC_FRP_PORT int    = 10905
 	TEST_STCP_ECHO_STR    string = "stcp type:" + TEST_STR
 
+	TEST_SUDP_FRP_PORT int    = 10816
+	TEST_SUDP_ECHO_STR string = "sudp type:" + TEST_STR
+
 	ProxyTcpPortNotAllowed  string = "tcp_port_not_allowed"
 	ProxyTcpPortUnavailable string = "tcp_port_unavailable"
 	ProxyTcpPortNormal      string = "tcp_port_normal"

tests/util/util.go

@@ -71,6 +71,11 @@ func GetProxyStatus(statusAddr string, user string, passwd string, name string)
 			return &s, nil
 		}
 	}
+	for _, s := range allStatus.Sudp {
+		if s.Name == name {
+			return &s, nil
+		}
+	}
 
 	return status, errors.New("no proxy status found")
 }

utils/version/version.go

@@ -19,7 +19,7 @@ import (
 	"strings"
 )
 
-var version string = "0.32.1"
+var version string = "0.33.0"
 
 func Full() string {
 	return version